Did you ever wonder why the Grand Tetons rise straight up out of a flat valley? The Teton Fault separates two tectonic plates at the foot of the mountains. For the past 10 million years, the mountains have inched up to 13,700 feet, while the flat valley floor has sunk to its current level at 6,800 feet above sea level, according to the National Park Service.
During the Ice Age glaciers moved south from Yellowstone region, filling the valley and then eroding the mountains into jagged peaks and melting into lakes. All of this geology history tells a fascinating story too gradual for us to observe, but we can observe the changing seasons and fall color.
Do the colors in this scene leave you feeling uplifted?
(The facts in this blog were provided by the National Park Service.)